---
title: "Yamuna River: Source, Tributaries & UPSC Notes"
description: "The Yamuna River, the Ganga's largest tributary, flows 1,376 km from Uttarakhand to Prayagraj, making it vital for India's ecology and culture."
url: "https://modeldiplomat.com/learn/glossary/yamuna-river"
---

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Model Diplomat Research Team · Last reviewed June 22, 2026

TL;DR

- The Yamuna is the largest tributary of the Ganga, rising at the Yamunotri glacier in Uttarakhand and flowing roughly 1,376 kilometres to its confluence at Prayagraj.
- What are the right-bank versus left-bank tributaries of the Yamuna?
- Why is the Delhi stretch of the Yamuna so polluted despite the Yamuna Action Plan?
- How is Yamuna water allocated among states?
- What is the significance of the Yamuna's confluence at Prayagraj?

[Civil Service & Diplomatic Exams](https://modeldiplomat.com/learn/civil-services/glossary)Updated June 22, 2026

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In 2021 the National Green Tribunal directed Delhi and Haryana authorities to curb ammonia and untreated sewage after toxic white foam again covered the Yamuna at Kalindi Kunj during the Chhath Puja festival.

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